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(No Model.) 2 Sheets-Sheet 1.

A. G. SAUNDERS. -STAMPER BATTERY FOR'DISINTEGRATION 012' METALLIFEROUS033s.

No. 547,184. Patented Oct. 1,1895.

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(EA oi ANDREW lea/1AM PHOTO-UTNOYWASHINGTON DC (No Model.) 2 SheetsSheet2.

' A.. G. SAUNDERS. STAMPER BATTERY FORDISINTEGRATION 0P METALLIFEROUSORES.

No. 547,184.- Patented Oct. 1, 1895.

AN DREW B.GRAHAM. PHUTO'UTHQWAfiHI NIUN, 0.6.

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STAMPER-BATTERY FOR DISINTEGRATION OF METALLIFEROUS ORES.

SPECIFICATION forming part of Letters Patent No. 547,184, dated October1, 1895. Application filed July 8, 1895- Serial No. 555,269- (No model.)

To aZZ whom it may concern:

Be it known that I, ALFRED GEORGE SAUN DEBS, engineer, of Gouger Street,Adelaide, in the Province of South Australia, have invented anImprovement in Stamper-Batteries for the Disintegration of MetalliferousOres, of which the following is 'a specification.

My invention relates to certain improve ments in that class of machineryusually known as stamper-loatteries and employed for the purpose ofdisintegrating metalliferf ous ores and the like, in which operation thematrix is submitted to a series of blows from a falling weight or stampuntil it becomes more or less finely pulverized, as required.

The special object of my invention is to provide certain mechanismwhereby the power required for actuating such machines may be moreeconomically employed and the operation of stamping the ore beperformedat a greater speed than is at present customary for suchpurpose.

In order to obtain the aforesaid object, I dispense with the revolvingcam-shaft, and also the cams which are usually employed for raising thestamp-rods, and substitute certain springs, as well as a cross-head,connecting rod, and crank-shaft in lieu thereof.

In my invention motion is transmitted to the stamp-rod through thesprings and cross head by means of the connecting-rod, in conjunctionwith the crank-shaft, the latter being caused to revolve by applyingpower to suitable gearing connected therewith.

In order that my invention may be the better understood, 1' will furtherdescribe the same in detail, having reference to the accompanyingillustrations, in Which Figure 1 is a side elevation of the machinestamp-shoes C, a stamp-box 0 being provided for the reception of theore.

The lower arm D of a hinged spring-carrier is securely bolted to theframework of the machine, the uppertarm D of the said carrier beinghinged to the lower arm at D The upper arm is preferably forked, so asto pass on either side of the stamp-rod G, and the free end of the saidarm terminates in a link-boss D into which the cross-pin D is inserted.Upon the upper arm D of the spring-carrier a bearing D is provided, and

is so arranged as to allow sufficient room for a slight radial movementin the working parts. Aslide-block may be added to the mechanism, if sodesired. Between the upper and lower arms of the spring-carrier a stoutspring E is arranged, and is preferably formediby securing one end of aplate or plates of spring-steel to each lin b of the spring-carrier. Thecontour of thel platcs is such as will enable their free ends to impingeupon each other at E, as illustrated in the drawings, at which pointthey may be hinged together, if so desired, by means of an ordinary pinand eye or other well-known device. I do not, however, confine myself tothis class of spring, but as an alternative may employ (with or withouta spring-carrier) a spring or springs, such as illustrated in Fig. 4, orany suitable'equivalent thereof.

Forthe purpose of actuating the machine a connecting-rod, such as F, isattached to the link-boss 1) by means of the cross-pin D and is fastenedto the crank G of the crank-shaft G in any convenient manner. Upon thestamp-rod G a sliding collar and cross-head device H is placed, and isarranged so as to impinge upon or work within the bearing D At a shortdistance above the working position of the sliding collar and cross-heada fixed collar J is mounted, the space between the said fixed collar andthe cross-head being occupied by a spiral spring J, to be hereinafterreferred to as the comnensating spring. The tension of the com pensatingspring is such as will enable the said spring to carry the weight of thestamperrod and shoe complete without material deflection. At a shortdistance below the working position of the sliding collar and crossheada fixed collar K is mounted, the space between the said fixed collar andthe crosshead being occupied by a spiral spring K, to

be hereinafter referred to as the buffingspring. The tension of thebufiing-spring is less than that of the compensating spring.

When it is desired to use my invention, the matrix or ore to be brokenis fed into the stamp-box C in the ordinary manner. The crank-shaft G isthen caused to revolve, motion being imparted thereto by means of apinion-wheel, such as L, attached to the said crank-shaft G and gearedinto a spur-wheel,

I such as M, and a belt-pulley or a drivingwheel for hand-power, such asM, may be attached to the common spindle M? for motive purposes. As thecrank-shaft rotates, bringing the crank upward, so that theconnectingrod is lifted, thus releasing the tension of the main springand at the same time elevating the bearing D upon which the cross-head His dependent for its movement, it will be seen that the compensatingspring J rests upon the sliding collar of the cross-head device 11. Itwill also be seen that the movement of upper end of the said spring ischecked by the collar J, which is a fixture upon the stamprod C. It willtherefore be readily understood that when the cross-head is lifted bythe upward movement of the bearing D upon the spring the stamp-rod Cwill also be lifted, the tension of the compensating-spring when setbeing sufficiently strong to resist compression due to the dead weightof the rod and shoe, as hereinbefore stated. After passing the topcenter the crank, as it descends, carries the connecting-rod downward,thus lowering the bearing and allowing the stamper to descend until itstrikes the ore beneath. In so doing the buffing-spring K, which isweaker than the compensating spring J, is more or less compressed, theslack space caused by the impact being immediately taken up by thecompensating spring. In event of an extra large or unbreakable block ofore being placed beneath the stamps a further compression of thebuffing-spring enables the crank-shaft to pass the bottom deadcenter. Bymeans of the springs employed in the manner described and illustratedanamount of what is known as give and take is obtained from the severalworking parts of the mechanism, and in actual experiment is found to beproductive of the beneficial results required. When metalliferous oresof dissimilar consistency are to be treated, the length of stroke may bevaried by altering the position of the collars J and K and adjusting thethrow of the crank to suit, or as an alternative means for obtaining thesame object the distance between the link-boss D and the bearing D maybe increased or decreased, as required. In the specification the workingparts of gearing for a single stamp have been described; but it is to beunderstood that several head of stamps may be worked by my system in oneand the same battery, as indicated in Fig. 2 of the illustrations.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In combination, the Stamper rod, the cross headthereon, the collars above and below the cross head, the springsinterposed between the collars and crosshead, the pitman with operatingmeans, the spring carrier and the main frame to which it is connected,said spring carrier being connected with the pitman and engaging thecross head, substantially as described.

2. In combination, the main frame, the stamper and its rod, the crosshead, the collars above and below the same, the springs between thecollars and cross head, the pitman, the movable carrier between thepitman and main frame arranged to rise and fall with the pitman, saidcarrier engaging the cross head, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

' ALFRED GEORGE SAUNDERS.

WVitnesses:

FRANK HAMBRIDGE, J OHN HERBERT COOKE.

